JPH07289480A - Electric cleaner - Google Patents

Abstract

PURPOSE:To enhance suction capacity by supporting the bearings provided to both ends of a rotary brush to a main body in a liftable manner and providing the cams raising and lowering the bearings and a cam operation means and blowing up dust by the wind generated by the rotation of the brush. CONSTITUTION:A suction port 13 is opened to the front of the bottom surface of a lower case 2 and the rotary brush 3 cooperated by a belt 15 is arranged to an electromotive blower 14. Bearings 4L, 4R are attached to both left and right end parts of the rotary brush 3 and fitted in the space between a pair of the upper and lower inclined cams 6L, 6R provided in the lower case 2 so as to be movable before and behind in a slide contact state. The right-hand inclined cam 6R is extended up to the rear part of the lower case 2 and connected to the pedal 8 supported at the rear part of the lower case 2 so as to be rotatable around a horizontal shaft 16 within a predetermined range through a pin 9. At the time of the cleaning of a floor, the cams 6L, 6R are operated to raise the position of the rotary brush 3 to prevent the rotary brush 3 from rubbing a floor surface to damage the same and the dust on the floor is blown up by the wind generated by the rotation of the brush to be sucked.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric vacuum cleaner, and more particularly to an electric vacuum cleaner having an improved suction performance on the floor.

[0002]

2. Description of the Related Art Conventionally, as an electric vacuum cleaner, 1 left and 1
Some include a rotating brush rotatably supported via a pair of bearings. In this conventional vacuum cleaner, the rotary brush is rotated to clean the carpet and dust is sucked out from the carpet, and the rotary brush is stopped during floor cleaning to prevent the rotary brush from damaging the floor surface. (See JP-A-56-139727).

[0003]

In this conventional electric vacuum cleaner, the rotation of the rotary brush is stopped during floor cleaning.
The suction performance on the floor was poor, and there was a problem particularly with suction of solidified heavy sand.

In view of the above circumstances, it is an object of the present invention to provide an electric vacuum cleaner having an improved suction performance on the floor.

[0005]

SUMMARY OF THE INVENTION The present invention has a left and right body 1
In an electric vacuum cleaner provided with a rotating brush rotatably supported via a pair of bearings, in order to achieve the above object, the bearing is supported by a main body so as to be able to move up and down, and a cam for moving the bearing up and down, and a cam. And means for operating the.

[0006]

In the present invention, the cam is operated to make the rotating brush higher during floor cleaning than during carpet cleaning.
The rotary brush is prevented from coming into contact with the floor, and dust on the floor can be sucked up by the wind generated by the rotation of the rotary brush.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The vacuum cleaner according to one embodiment of the present invention will be described in detail with reference to the drawings.

This electric vacuum cleaner is an upright electric vacuum cleaner to which the present invention is applied. As shown in FIG. 7, an upper case 11 is erected on a lower case 2 of a main body 1 and further , Handle 1 on this upper case 11
2 is started up, and as shown in FIG. 1 to FIG. 6, a suction port 13 is opened in the front part of the bottom surface of the lower case 11, and a rotating brush which is linked to the electric blower 14 by a belt 15 is connected to the suction port 13. 3 is arranged.

Bearings 4 are provided at both left and right ends of the rotating brush 3.
L and 4R are attached, and the bearings 4L and 4R are fitted between the guide ribs 5 formed on the inner surface of the lower case 2 so as to be vertically slidable or in rolling contact.

The bearings 4L and 4R are provided in the lower case 2 so as to be movable back and forth.
It is fitted so as to slide or roll between R. Figure 3
The inclined cam 6R into which the bearing 4R on the right side in FIG. 6 is fitted has a cam surface 7R that is higher in the front and lower in the rear as shown in FIGS. 1 and 2, and the bearing on the left side in FIGS. As shown in FIGS. 4 and 5, the inclined cam 6L into which 4L is fitted has a cam surface 7L that is low in the front and high in the rear.

As shown in FIGS. 1 and 2, the right tilting cam 6R extends to the rear part of the lower case 2 and is supported by the rear part of the lower case 2 so as to be rotatable about a horizontal shaft 16 within a predetermined range. 1 and 3, the tilted cam 6R is pulled backward when the pedal 8 horizontally projects rearward, as shown in FIGS. 1 and 3.
As shown in FIG. 5, the tilt cam 6R is pushed forward when the bed 8 is stepped down.

Although not shown, when the pedal 8 is depressed by a certain amount, it is locked at the depressed position,
When the pedal is depressed further deeper, the lock is released, and the spring force restores it to a position that horizontally projects rearward.

As shown in FIGS. 3 and 6, the right side inclined cam 6R and the left side inclined cam 6L are opposite to each other via a swing lever 10 rotatably supported on the lower case 2 about the longitudinal axis. Therefore, when the pedal 8 horizontally protrudes backward as shown in FIGS. 3 and 4, the inclined cam 6L is pushed forward, and as shown in FIGS. When 8 is stepped down, the inclined cam 6L is pulled backward.

When cleaning a floored floor,
The rotary brush 3 and the bearings 4L and 4R are lifted high and separated from the floor by moving the pedal 6 backward so as to horizontally project the cam 8R and moving the cam 6L forward. Therefore, there is no possibility that the rotating brush 3 may scratch the floor surface and damage the floor surface, and the wind generated by the rotation of the rotating brush 3 may suck dust on the floor, for example, by blowing the sand on the floor while sucking dust on the floor. Since it can be sucked into the suction port 13,
The suction performance on the floor can be improved.

When cleaning the floor on which the carpet is laid, the rotary brush 3 and the bearings 4L and 4R are lowered by depressing the pedal 8 to move the cam 6R forward and retract the cam 6L. It can be sucked into the suction port 13 by striking it to raise dust.

In the above embodiment, the cam surfaces 7L and 7R of the cams 6L and 6R are continuous to the front ends of the cams 6L and 6R, but according to another embodiment of the present invention shown in FIGS. 8 to 13, for example. Like an electric vacuum cleaner, a slanted rectangular hole is formed through the cams 6L and 6R, and the long sides of this hole form the cam surfaces 7L and 7R.
May be configured.

In this embodiment, the cam 6R is not directly connected to the pedal 8 but is connected to the pedal 8 via a slide 17R supported by the lower case 2 so as to be movable back and forth, and
The cam 6L includes a slide 17L supported on the lower case 2 so as to be movable back and forth, a swing lever 10, and a slide 17L.
It is linked to the cam 6R via R.

Since the other construction, operation and effect of this embodiment are the same as those of the above-mentioned one embodiment, their description will be omitted to avoid duplication.

Although the example in which the present invention is applied to the upright type electric vacuum cleaner has been described above, the present invention is not limited to the upright type electric vacuum cleaner, and the electric cleaning having a rotating brush driven by a motor at the suction port. It is widely applied to machines.

[0020]

As described above, according to the present invention, the bearings provided at both ends of the rotating brush are supported by the main body so as to be able to move up and down, and the cam for moving the bearing up and down and the means for operating the cam are provided. Since it is provided, when cleaning the floor, operate the cam to raise the position of the rotating brush to prevent contact between the floor surface and the rotating brush, prevent the rotating brush from damaging the floor surface, and rotate the rotating brush. The dust generated on the floor can be sucked up by the wind generated by this rotation, and the suction performance on the floor can be improved.

[Brief description of drawings]

FIG. 1 is a right side view of a main part of an embodiment of the present invention during floor cleaning.

FIG. 2 is a right side view of a main part of an embodiment of the present invention when cleaning a carpet.

FIG. 3 is a plan view of an essential part of an embodiment of the present invention during floor cleaning.

FIG. 4 is a left side view of the main part of the embodiment of the present invention during floor cleaning.

FIG. 5 is a left side view of an essential part of an embodiment of the present invention when cleaning a carpet.

FIG. 6 is a plan view of the essential parts of an embodiment of the present invention during carpet cleaning.

FIG. 7 is a front view of an embodiment of the present invention.

FIG. 8 is a right side view of the essential parts of another embodiment of the present invention during floor cleaning.

FIG. 9 is a right side view of the essential parts of another embodiment of the present invention when cleaning a carpet.

FIG. 10 is a plan view of an essential part of another embodiment of the present invention during floor cleaning.

FIG. 11 is a left side view of the essential parts of another embodiment of the present invention during floor cleaning.

FIG. 12 is a left side view of the essential parts of another embodiment of the present invention when cleaning a carpet.

FIG. 13 is a plan view of the essential parts of another embodiment of the present invention when cleaning a carpet.

[Explanation of symbols]

 1 Main body 3 Rotating brush 4L / 4R bearing 14 Electric blower 6L / 6R Inclined cam 8 Pedal

Claims (1)

[Claims] 1. An electric vacuum cleaner, which is rotatably supported by a main body via a pair of left and right bearings and includes a rotating brush driven by a motor, wherein the bearing is supported by the main body so as to be able to move up and down. An electric vacuum cleaner, comprising: a cam for moving up and down and a means for operating the cam.